Definition of "granulocyte-macrophage colony-stimulating factor" []

• A naturally occurring protein that stimulates the production of granulocytes and macrophages by stem cells and is used as a drug by some immunosuppressed individuals. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.